1 Introduction
2
Scope
2.1 General
2.2 Applicability
3
Possible benefits of the PCIs
3.1 For implementors
3.2 For users
3.3 For carriers
4
PCIs requirements
4.1 Independence
4.2 Dependency
4.3 Flexibility
4.4 Extensibility
4.5 Multiple applications
4.6 Easy implementation and testing
5
General guidelines for defining PCIs
5.1 Location of the interface
5.2 Functional description
5.3 Formal description
5.4 Presentation of the information
6
General functional model
7
Application related interfaces
7.1 Definitions
7.2 General features
8
Network/Protocol related interfaces
8.1 Definition
8.2 General features
Annex A – Definitions
Appendix I – Examples
I.1 Telefax 3 on PSTN
I.2 ISDN Lower Layer Module